It depends on how much money you're willing to sink into it in both instances....compression ratio is really high on the stock Si, so you'll have to bring it down to go FI, NA's going to require opening up the block to make it stronger. Both will probably void the warranty. lol.
As far as me though, I'm going to stick with NA until I decide whether I want to FI or not. I'm still unsure and think the potential with the Si's engine is quite vast from data I've seen on the TOV project car.
it will surpass the origional si from 99-00 i saw some of those get into 600hp range. i really like comptechs bolt on and it doesnt look like you have to drop the compression, it uses 5 psi and gains of about 50hp, so it will go with the compression i think, they say its bolt on
u shouldnt have to change anything for that "bolt on" Comptech. BOLT ON.... especially when it's only running 5 psi. 50hp on 5spi is decent but I dont like the idea of a SC when u could go turbo. just me though.... either way = more power
alot eventually but wont get farther than low 13's if you manual. turbo prob dezod will make one, internals(pistons, rods, camshaft, cam gear pulley) check out 7th gen civic pretty much the same, but have to wait till parts out for the r18(i think thats the engine code)